diff options
Diffstat (limited to 'arch/powerpc/sysdev/tsi108_pci.c')
| -rw-r--r-- | arch/powerpc/sysdev/tsi108_pci.c | 48 |
1 files changed, 42 insertions, 6 deletions
diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c index 322f86e93de5..ae249c6bbbcf 100644 --- a/arch/powerpc/sysdev/tsi108_pci.c +++ b/arch/powerpc/sysdev/tsi108_pci.c @@ -3,6 +3,8 @@ * * 2004-2005 (c) Tundra Semiconductor Corp. * Author: Alex Bounine (alexandreb@tundra.com) + * Author: Roy Zang (tie-fei.zang@freescale.com) + * Add pci interrupt router host * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -48,6 +50,8 @@ u32 tsi108_pci_cfg_base; u32 tsi108_csr_vir_base; +static struct device_node *pci_irq_node; +static struct irq_host *pci_irq_host; extern u32 get_vir_csrbase(void); extern u32 tsi108_read_reg(u32 reg_offset); @@ -378,6 +382,38 @@ static struct irq_chip tsi108_pci_irq = { .unmask = tsi108_pci_irq_enable, }; +static int pci_irq_host_xlate(struct irq_host *h, struct device_node *ct, + u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, unsigned int *out_flags) +{ + *out_hwirq = intspec[0]; + *out_flags = IRQ_TYPE_LEVEL_HIGH; + return 0; +} + +static int pci_irq_host_map(struct irq_host *h, unsigned int virq, + irq_hw_number_t hw) +{ unsigned int irq; + DBG("%s(%d, 0x%lx)\n", __FUNCTION__, virq, hw); + if ((virq >= 1) && (virq <= 4)){ + irq = virq + IRQ_PCI_INTAD_BASE - 1; + get_irq_desc(irq)->status |= IRQ_LEVEL; + set_irq_chip(irq, &tsi108_pci_irq); + } + return 0; +} + +static int pci_irq_host_match(struct irq_host *h, struct device_node *node) +{ + return pci_irq_node == node; +} + +static struct irq_host_ops pci_irq_host_ops = { + .match = pci_irq_host_match, + .map = pci_irq_host_map, + .xlate = pci_irq_host_xlate, +}; + /* * Exported functions */ @@ -391,15 +427,15 @@ static struct irq_chip tsi108_pci_irq = { * to the MPIC. */ -void __init tsi108_pci_int_init(void) +void __init tsi108_pci_int_init(struct device_node *node) { - u_int i; - DBG("Tsi108_pci_int_init: initializing PCI interrupts\n"); - for (i = 0; i < NUM_PCI_IRQS; i++) { - irq_desc[i + IRQ_PCI_INTAD_BASE].chip = &tsi108_pci_irq; - irq_desc[i + IRQ_PCI_INTAD_BASE].status |= IRQ_LEVEL; + pci_irq_node = of_node_get(node); + pci_irq_host = irq_alloc_host(IRQ_HOST_MAP_LEGACY, 0, &pci_irq_host_ops, 0); + if (pci_irq_host == NULL) { + printk(KERN_ERR "pci_irq_host: failed to allocate irq host !\n"); + return; } init_pci_source(); |